Vibrator implement



June 5, 1934. p c gp 1,961,388

VIBRATOR IMPLEMENT Filed Dec. 27, 1932 and condense the same.

Patented June 5, 1934 UNITED STATES 1,961,388 vmnA'roa IMPLEMENT .George B. Pickop, New Haven, Conn., assignor to Malleable Iron Fittings Company, Branford, C0nn., a corporation of Connecticut Application December 27,

12 Claims.

My invention relates to a tool or implement for use in making concrete, and more especially to a tool for slicing, tamping, or otherwise working concrete after it has been poured in order to settle When concrete is poured into forms, or when it is molded by being i, poured into wood or metal forms, it is desirable either to vibrate the form or mold, or to tamp or slice the concrete by means of a crow-bar or spade-tool having a flattened end.

One object of the present invention is to provide an improved tool for tamping or slicing concrete which will be useful in connection with. foundation work, pillar and caisson work, and also in the making of certain concrete units which are poured in wood or metal molds.

Another object of the invention isto provide a form of tool by means of which the concrete may be more readily and effectively sliced and settled than by the use of the usual vibrator or slicing bar, and by means of which the usual air pockets are broken up and theair expelled from the concrete, and the excess water brought to the top, thus reducing the amount of time necessary for curing the concrete and producing a more uniform and desirable product.

Another object of the invention is to bring about a concrete slicing bar or implement having projections upon its surface or surfaces which will effectively work against the concrete to tamp the same, and at the same time will lead the air to the surface.

A still further. object of the invention is to provide a tool of this character which may be readily introduced into the concrete mass, which will be easily manipulated and which will bring-about an effective settling and tamping of the mass.

A still further object of the invention is to provide a tool of the character described which will be of comparatively simple construction and will, therefore, be economical to manufacture, and at the same time will be strong and rugged, as is important in a tool of this character.

To these and other ends, the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the drawing:

Fig. l is a front elevational view of a vibrator implement embodying my invention;

Fig. 2 is a side elevational view of the same; and

Fig. 3 is an enlargedview partly in section on line 3-3 of Fig. 2 showing the vibrator element and connections thereto.

To illustrate a preferred form of my invention, I have shown a tool having a spade-like blade 10, the body portion of which is substantially flat. Upon the body portion of the tool are formed projections 11 which, in this instance, are provided upon both the rear and front faces thereof. In

1932', Serial No. 649,015

the. form of my invention shown, the projections 11 are inclined relatively to the longitudinal axis of thetool and are joined at their adjacent ends so as to provide in effect a continuous and sinuous projection extending from the lower to the upper end of the blade. These projections not only work against the concrete mass and effectively tamp-and settle the same, but also, in the continuous form shown, provide means for leading the air from the mass to the upper surface thereof where it may pass off. As illustrated in the drawing, I prefer to have the projections on one side of the blade staggered from those upon the other side, so that the apices of the meeting projections on one side of the blade will lie at the opposite edge of the tool: from the corresponding apices of the projections on the other side.

At the upper end of the blade 10 is provided a threaded socket 12 to receive the threaded portion 13 of the head 14 of a vibrator 15. The vibrator shown is of the compressed air type and is of the usual form, having a cylinder 16 and a reciprocating plunger or piston 17.

The vibrator body is provided with an inlet port 18 and exhaust ports 19 and 20. In the use of the tool, it will sometimes occur that the vibrator ora part thereof may sink below the surface of the mass, and I arrange, therefore, to conduct the compressed air to the inlet port and conduct it away from the exhaust ports through tool, regardless of whether or not the vibrator is below the surface of the mass.

To this end I secure plates 21 and 22 upon the vibrator body over the inlet and exhaust ports, respectively. The plate 21 covers the inlet port 18 and is provided at its inner surface with a groove or channel 23 opening through the surface of the plate 21 so as to communicate with the inlet opening. The groove 23 is connected by a bore 24 to a threaded opening 25 to which may be secured the nipple 26 of a tube or hose 27 carrying compressed air.

Inlike manner, the plate 22' is provided with a groove or channel 28 communicating with the exhaust ports 19 and 20 and connected by a bore 29 to the threaded opening 30, to which is secured the nipple 31 of the tube or hose 32, which hose acts as the compressed air outlet to carry away the exhaust air. The plates, or intake and exhaust fittings, 21 and'22 may be conveniently formed and welded upon the usual vibrator body.

The tubular members 27 and 32 may comprise flexible tubes, such as pieces of suitably constructed hose or the like, and in any case these members may be connected together by the clamps 33 and 34 so as to be maintained in paral- 'means which will permit the operation of the members for these parts are necessary. Moreover, I have provided a tool in which the inlet and exhaust ports of the vibrator are protected so that they cannot become clogged.

It will be noted that the vibrator piston operates in the direction of the longitudinal axis of the blade, and that the projections 11 upon the blade are arranged so as to cross from one lateral edge of the blade to the other whereby the vibrations will take place generally transversely of these projections so as to effectively tamp and settle the concrete mass. Moreover, the provision of the projections in a sinuous form, or in a continuous line from the top to the bottom of the tool arranged on both surfaces thereof, will effectively provide for the leading of the air from the body of the mass to the upper surface thereof so that it will be expelled.

It will sometimes be found desirable to deliver compressed air at a point adjacent the lower tip of the blade body 10. This is sometimes found to be of assistance in introducing the tool into the concrete mass. This may be done by providing a small opening down the center of the blade, which opening will be connected to the compressed air inlet tube.2'l, or, if desired, a branch tube may be connected to the tube 27, which branch tube may be carried to a point adjacent the tip of the tool.

While I have shown and described a preferred embodiment of my invention, it will be understood that it is not to be limited to all of the details shown, but is capable of modification and variation within the spirit of the invention and within the scope of the appended claims.

What I claim is:

1. In a tool for working a mass of concrete or the like, a slicing blade having projections on its surface extending across the blade in an inclined direction and a vibratory unit connected to the blade for moving it longitudinally of its axis.

2. In a tool for working a mass of concrete or the like, a slicing blade having projections on the surface thereof and a vibratory unit connected to the blade for moving it longitudinally of its axis, said projections comprising ribs extending in an inclined direction back and forth across the blade.

3. In a tool for working a mass of concrete or the like, a slicing blade having projections on the surface thereof, a vibratory unit connected to the blade for moving it longitudinally of its axis, said projections comprising ribs extending in an inclined direction on the blade, and said ribs being connected to form a sinuous projection extending in an up and down direction.

4. In a tool for working a mass of concrete or the like, a slicing blade having obliquely disposed means on the surface thereof to lead fluid substances from the body of the mass to the surface thereof, and a vibratory unit to vibrate said blade in a direction longitudinally of its axis.

5. In a tool for working a mass of concrete or the like, a slicing blade having a substantially flat body and a rib projecting from the surface of the blade and extending in an up and down direction thereof, said rib being of a sinuous form.

6. In a tool for working a mass of concrete or the like, a slicing blade having a substantially flat body portion and a rib upon each of the front and rear surfaces thereof, said ribs being of sinuous form so as to work against the mass when the blade is moved in an up and down direction.

7. In a tool for working a mass of concrete or the like, a blade, a vibrator body secured directly thereto, a reciprocating piston in said body operating in the direction of the longitudinal axis of the blade, and tubular members,secured to said vibrator body to carry pressure fluid to and from the vibrator, said tubular members serving as handles for the tool.

8. In a tool for working a mass of concrete or the like, a blade, tubular handle members for the blade, means for securing said members to the blade comprising a vibrator body to which the handle members and blade are secured, and said tubular members carrying the pressure fluid for operating the vibrator.

9. In a tool for working a mass of concrete or the like, a blade for insertion into the mass, a vibrator unit secured at its lower end directly to the blade at the upper end thereof and extending upwardly therefrom and a handle member secured to the vibrator unit at the upper end thereof whereby the latter serves to connect the handle member to the blade, with the blade, vibrator unit, and handle in alignment.

10. In a tool for working a mass of concrete or the like, a blade for insertion into the mass, a vibrator unit secured at one end directly to the .blade and a handle member secured at the other end to the vibrator unitwhereby the latter serves to connect the handle member to the blade, said handle member being tubular to carry the .pressure fluid to the vibrator.

11. In a tool for working a mass of concrete or the like, a working blade, a vibrator body secured directly to the. blade at the upper end thereof and having an inlet port and a pair of exhaust ports, a plate member secured to the body to cover said exhaust ports and extending to the upper end of the body, said member having a groove in its inner surface facing the body and communicating with both of said exhaust ports, and a tubular member secured to the upper end of said plate member and communicating with said groove.

12. In a tool for working a mass of concrete or the like, a working blade, a vibrator body secured directly to the blade at the upper end thereof and having an inlet port and a pair of exhaust ports, a plate member secured to the body to cover said exhaust ports and extending its upper end in communica- 

